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Organic-inorganic hybrid nanometer film coating aluminum powder pigment and preparation method and application thereof

A nano-film and coating technology is applied in the field of organic-inorganic hybrid nano-film-coated aluminum powder pigments to achieve the effects of improving compatibility, good acid and alkali resistance and water resistance, and good metallic luster.

Inactive Publication Date: 2009-11-18
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

At present, there are no reports of organic-inorganic hybridization to construct nano-membrane-coated aluminum powder pigments at home and abroad. This patent uses organic-inorganic hybridization to prepare organic-inorganic hybrid nano-membrane-coated aluminum powder particles, that is, first synthesize carbon-carbon double Bonded organosiloxane polymers, and then use carbon-carbon double bond organosiloxane polymers to undergo synergistic hydrolysis with ethyl orthosilicate to form an organic-inorganic hybrid film, and use the hybrid film to improve anti-corrosion performance and gloss. Improve film adhesion by utilizing organic segments of polymers

Method used

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  • Organic-inorganic hybrid nanometer film coating aluminum powder pigment and preparation method and application thereof

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Embodiment 1-6

[0025] Embodiment 1-6 is the preparation method of organic-inorganic hybrid nano film coated aluminum powder pigment

Embodiment 1

[0027] The first step is to add 5 parts of vinyltrimethoxysilane, 6 parts of styrene, 40 parts of butyl acetate, and 1 part of azobisisobutyronitrile to the first reaction vessel under nitrogen protection, and react for 10 hours under stirring. The temperature is 60°C, and a polymer of carbon-carbon double bond organosiloxane and carbon-carbon double bond polymerizable monomer is obtained;

[0028] In the second step, in parts by mass, add 2 parts of aluminum powder pigment and 40 parts of methanol into the second reaction vessel, and stir at room temperature for 0.5 hour; 10~40nm;

[0029] In the third step, in the second reaction vessel described in the second step, add the mixture of 20 parts of polymers obtained in the first step, 5 parts of tetraethyl orthosilicate, 4 parts of water, 2 parts of ammonia and 10 parts of ethanol, Wherein the mixture of 20 parts of polymers obtained in the first step and 5 parts of tetraethyl orthosilicate and the mixture of 4 parts of water...

Embodiment 2

[0032] In the first step, in parts by mass, 3 parts of butadienyltriethoxysilane, 6 parts of butyl methacrylate, 40 parts of xylene, 0.5 part of benzene peroxide are added to the first reaction vessel under nitrogen protection Formyl was reacted under stirring for 6 hours at a reaction temperature of 110°C to obtain a polymer of carbon-carbon double bond-type organosiloxane and carbon-carbon double-bond type polymerizable monomer;

[0033] In the second step, in parts by mass, add 4 parts of aluminum powder pigment and 40 parts of propanol to the second reaction vessel, and stir for 1 hour at room temperature; 10-40nm;

[0034] In the third step, in the second reaction vessel described in the second step, add the mixture of 40 parts of polymers obtained in the first step, 5 parts of tetraethyl orthosilicate, 6 parts of water, 3 parts of ammonia and 10 parts of ethanol, Wherein the mixture of 40 parts of polymers obtained in the first step and 5 parts of tetraethyl orthosilicate...

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Abstract

The invention discloses organic-inorganic hybrid nanometer film coating aluminum powder pigment and a preparation method and application thereof. The preparation method comprises the followings steps: by utilizing organic-inorganic hybrid technology and taking aluminum powder pigment as nuclear, firstly performing free radical polymerization on polymerisable carbon-carbon double bond reaction monomers and polymerisable carbon-carbon double bond organosiloxane; and bonding the obtained polymer and ethyl orthosilicate with the surface of the aluminum powder pigment in a hydrolysis mode, and further coating a layer of organic-inorganic hybrid nanometer film on the surface of the aluminum powder. On the basis of maintaining the lustrousness of the aluminum powder, the prepared organic-inorganic hybrid nanometer film coating aluminum powder pigment has excellent compatibility with resin and good acid and alkaline resistance properties, simultaneously well solves the problem of 'powder falling' when the conventional aluminum powder and single-layer or two-layer costing aluminum powder pigment are applied to metallic coatings, and provides a foundation for applying modified aluminum powder pigment and developing high performance metallic coatings.

Description

technical field [0001] The invention relates to the field of organic-inorganic hybrid technology, in particular to an organic-inorganic hybrid nano-membrane-coated aluminum powder pigment and its application technology. Background technique [0002] In recent years, with the increasing demand for aluminum silver paste and protective coatings in the fields of finishing and decoration, aluminum powder pigments have received extensive attention. High gloss, strong adhesion and corrosion resistance have become the key to measure the performance of aluminum powder pigments. In order to obtain the above-mentioned high-performance pigments, it is necessary to modify the surface of the aluminum powder. At present, the commonly used methods are all based on chemical protection methods, which are mainly divided into additive methods and coating methods. The additive method is to physically mix additives on the surface of aluminum pigment particles to form a protective layer on the o...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/12C09D133/00C09D5/00C09D7/12
Inventor 皮丕辉路阳高爱环文秀芳程江杨卓如
Owner SOUTH CHINA UNIV OF TECH
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